Strengthening the resilience of electricity distribution networks, optimizing urban EV charging networks, or creating solutions for automating and securing access to nuclear power plants and facilities — these are just a few of the 9 challenges announced for the CleanTech Hackathon 2025, the first event in Southeast Europe dedicated to programmers and startups developing sustainable energy technologies. The hackathon will take place on May 23–24th during ENERGY EXPO 2025, the region’s largest